To examine the potential for exercise to build bone mass during growth, objectives of this dissertation included: 1) determine the effects of 7 months of jumping followed by 7 months of detraining on hip and spine bone mass in the prepubertal children; 2) determine variables that best predict bone mineral...
Methane is a flammable gas that is the main component of natural gas. It is a highly potent greenhouse gas, and accounts for about 20% of greenhouse gas emissions. Methane is routinely flared in many industrial processes without harnessing any of its energy. The environmental impact and wasted energy potential...
Recent research suggests that individuals might use compensatory movement patterns in their ACL-reconstructed (ACLR) limb when performing a triple hop (TH) to overcome quadriceps weakness. The purpose of this study was to determine if ACLR females exhibit differences in TH performance compared to previously uninjured females. Nineteen females with ACLR...
Iliotibial (IT) band syndrome is a common overuse injury which affects many runners and can result in needing to take time off from running to alleviate symptoms or allow the injury to heal. Common biomechanical characteristics of those affected by IT band syndrome include increased hip adduction, knee varus, and...
An important field of study within the exercise science realm lies in identifying risk factors for musculoskeletal injuries to inform injury prevention programs. One of the more serious injuries in sports, especially sports involving cutting and jumping, is sprain of the anterior cruciate ligament (ACL). Previous research has found that...
Title: The Influence of External Focus of Attention Feedback on ACL Injury Related Landing Biomechanics Purpose: To investigate whether a one-time dose of external feedback would result in immediate changes in landing biomechanics related to ACL injury risk and if any changes are retained after 48 hours. Methods: We used...
Background: The use of a lower extremity injury prevention program (IPP) by female athletes before the completion of puberty may mitigate movement changes that develop during puberty and contribute to greater injury risk. It is unknown whether player age influences coaches’ knowledge, attitudes, and behaviors surrounding IPPs. Methods: Fifty-four female...
Purpose: To investigate the influences of RTD on biomechanical factors upon landing. Methods: A nine camera motion capture system (Vicon, Inc.) was used with standard retroreflective marker set (27 static, 23 dynamic) to capture lower limb kinematics of 40 healthy female subjects during double leg jump landing (DL) and single-leg...
Anterior cruciate ligament injuries are common in a wide variety of sports and most frequently occur during activities requiring rapid deceleration such as landing and cutting. Deceleration of the body's center of mass during movement results primarily from eccentric muscle contraction. This type of contraction serves to absorb energy from...
For athletes and training populations, the ability to track progress and determine appropriate workloads to stimulate adaptation is vital. Measures that represent a person’s aerobic fitness such as VO2 max and blood lactate concentration are often used for these purposes. While these measures can reveal a lot about a person’s...